The Old Deeside Railway Line. People living along the route were not allowed to hang there washing out in front of their houses as Queen Victoria didn't want to look at it on her way up to Braemar!!!
This cache was placed at the end of October. I'm not sure if it will be available in the summer months due to brambles.
To help narrow down your hunt here is an additional hint - it is on the side of the path nearest the houses.